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Piezoelectricity and rotostriction through polar and non-polar coupled instabilities in bismuth-based piezoceramics

Acosta, Matias ; Schmitt, Ljubomira A. ; Cazorla, Claudio ; Studer, Andrew ; Zintler, Alexander ; Glaum, Julia ; Kleebe, Hans‐Joachim ; Donner, Wolfgang ; Hoffman, Mark ; Rödel, Jürgen ; Hinterstein, Manuel (2022)
Piezoelectricity and rotostriction through polar and non-polar coupled instabilities in bismuth-based piezoceramics.
In: Scientific Reports, 6 (1)
doi: 10.26083/tuprints-00020489
Article, Secondary publication, Publisher's Version

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Item Type: Article
Type of entry: Secondary publication
Title: Piezoelectricity and rotostriction through polar and non-polar coupled instabilities in bismuth-based piezoceramics
Language: English
Date: 2022
Place of Publication: Darmstadt
Publisher: Springer Nature
Journal or Publication Title: Scientific Reports
Volume of the journal: 6
Issue Number: 1
Collation: 8 Seiten
DOI: 10.26083/tuprints-00020489
Corresponding Links:
Origin: Secondary publication service
Abstract:

Coupling of order parameters provides a means to tune functionality in advanced materials including multiferroics, superconductors and ionic conductors. We demonstrate that the response of a frustrated ferroelectric state leads to coupling between order parameters under electric field depending on grain orientation. The strain of grains oriented along a specific crystallographic direction,〈h00〉, is caused by converse piezoelectricity originating from a ferrodistortive tetragonal phase. For〈hhh〉oriented grains, the strain results from converse piezoelectricity and rotostriction, as indicated by an antiferrodistortive instability that promotes octahedral tilting in a rhombohedral phase. Both strain mechanisms combined lead to a colossal local strain of (2.4 ± 0.1) % and indicate coupling between oxygen octahedral tilting and polarization, here termed “rotopolarization”. These findings were confirmed with electromechanical experiments, in situ neutron diffraction and in situ transmission electron microscopy in 0.75Bi1/2Na1/2TiO3-0.25SrTiO3. This work demonstrates that polar and non-polar instabilities can cooperate to provide colossal functional responses.

Status: Publisher's Version
URN: urn:nbn:de:tuda-tuprints-204891
Classification DDC: 500 Science and mathematics > 550 Earth sciences and geology
600 Technology, medicine, applied sciences > 600 Technology
Divisions: 11 Department of Materials and Earth Sciences > Earth Science > Geo-Material-Science
11 Department of Materials and Earth Sciences > Material Science > Structure Research
Date Deposited: 16 Feb 2022 13:26
Last Modified: 24 Mar 2023 07:18
URI: https://tuprints.ulb.tu-darmstadt.de/id/eprint/20489
PPN: 506258165
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